feat: implement backend core with ORM models, authentication, and AI-driven telemetry diagnostics

feat: add Gradio frontend and update subprocess calls to use sys.executable

feat: implement sample sensor data generation and frontend app scaffolding

feat: implement telemetry processing pipeline with anomaly detection and add supporting integration tests

feat: initialize predictive maintenance system with core architecture, database, telemetry services, and documentation

feat: implement core FastAPI application structure with authentication, telemetry, and machine management modules

feat: implement predictive maintenance services and repositories with OpenRouter AI integration

phase 2 feat: initialize project database models, Pydantic schemas, and Alembic migrations

feat: initialize project structure with core configurations, database, security, and docker orchestration